| Methods |
Country: USA
Recruitment setting: community volunteers, motivated to quit, cessation clinic |
| Participants |
160 smokers (≥ 1 pack/day) in relevant arms |
| Interventions |
All received nicotine patch 21 mg 8 weeks incl weaning
Medium Intensity: 4 sessions over 9 weeks, 15 ‐ 20 mins, advice and education from nurse practitioner
Low Intensity: single 30‐min session with nurse, 3 videos |
| Outcomes |
Abstinence at 12 m, not defined
Validation: CO < 9 ppm, urine cotinine < 50 ng/ml |
| Notes |
No control group so not in main analysis
High intensity intervention not included in review |
| Risk of bias |
| Bias |
Authors' judgement |
Support for judgement |
| Random sequence generation (selection bias) |
Low risk |
"Urn randomization" |
| Allocation concealment (selection bias) |
Unclear risk |
Not specified |
| Incomplete outcome data (attrition bias)
All outcomes |
Low risk |
Rate of dropout similar in both groups; dropouts counted as smokers. Authors give 77 as ITT denominator for medium‐intensity group. N randomized of 80 used in MA. |
